Harbin is the capital of Heilongjiang province, and largest city in the northeastern region of the People's Republic of China. The city grew in the late 19th century with the influx of Russian engineers constructing the eastern leg of the Trans-Siberian Railroad. The city's Russian architecture includes its green-domed Saint Sophia Cathedral, an Eastern Orthodox church now a local history museum. Across the river, Sun Island Park is famed for year-round ice sculptures. Being the famous 'Ice City
', Harbin attracts visitors from home and abroad by the Harbin Ice and Snow Festival it holds each year. It is a pleasant carnival that provides visitors a whole world of ice and snow. The festival usually begins from January and last for over one month.